LCD wiki E32R28T 2.8inch ESP32-32E Ratidza Module

Zvinotsanangurwa

• Zita reChigadzirwa: 2.8inch ESP32-32E E32R28T&E32N28T
• Muenzaniso: CR2024-MI2875
• Ratidza Module: 2.8-inch ESP32-32E

Product Information

• Ichi chigadzirwa ndeye 2.8-inch ESP32-32E E32R28T&E32N28T module yekuratidzira ine akasiyana hardware uye software zviwanikwa zvekusimudzira.

Mirayiridzo Yekushandiswa Kwechigadzirwa

• Iyo resource directory inosanganisira sample zvirongwa, maraibhurari esoftware, zvakatemwa zvechigadzirwa, dhizaini yedhizaini, madheti, schematics, zvinyorwa zvevashandisi, uye chishandiso software.
• Ichi chikamu chinopa pamusoroview yezviwanikwa zvehardware zviripo pane module.
• Inotsanangura dhizaini yedhizaini yemodhi yekuratidzira zvakadzama.
• Inopa chenjedzo dzinofanirwa kutorwa paunenge uchishandisa iyo module yekuratidzira.

Resource Description

• Iyo resource directory inoratidzwa mumufananidzo unotevera:

Directory	Tsanangudzo Yemukati
1-Demo	Iyo sample purogiramu kodhi, yechitatu-bato software raibhurari iyo sample chirongwa chinotsamira pane, yechitatu-bato software raibhurari kutsiva file, iyo software yekuvandudza nharaunda setup yekuraira gwaro, uye iyo sampmurayiridzo wepurogiramu document.
2-Tsanangudzo	Ratidza module chigadzirwa kutsanangurwa, LCD skrini kutsanangurwa uye LCD kuratidza mutyairi IC yekutanga kodhi.
3-Structure_Diagram	Ratidza module chigadzirwa zviyero uye chigadzirwa 3D kudhirowa
4-DataSheet	LCD kuratidza mutyairi ILI9341 data book, kuramba touch screen driver XPT2046 data book, ESP32 master data book uye hardware dhizaini rekutungamira gwaro, USB kuSerial IC(CH340C) data book, audio amplifier chip FM8002E data bhuku, 5V kusvika 3.3V regulator data bhuku uye bhatiri kuchaja manejimendi Chip TP4054 data sheet.
5-Zvirongwa	Chigadzirwa hardware schematic, ESP32-WROOM-32E module IO resource yekugovera tafura, schematic, uye PCB chikamu pasuru
6-User_Manual	Chigadzirwa chemushandisi zvinyorwa
7-Tool_software	WIFI neBluetooth test APP uye maturusi ekugadzirisa, USB kune serial port driver, ESP32 Flash download tool software, character take-up software, image take-up software, JPG image processing software. uye serial port debugging zvishandiso.
8-Kurumidza_Kutanga	Kuda kupisa bhini file, penya chishandiso chekudhawunirodha, uye shandisa mirairo.

Software Instructions

Ratidza module software yekuvandudza matanho ndeaya anotevera:

• A. Vaka ESP32 papuratifomu software yekuvandudza nharaunda.
• B. Kana zvichidikanwa, pinza yechitatu-bato software maraibhurari sehwaro hwekusimudzira;
• C. Vhura iyo software purojekiti kuti igadziriswe, kana iwe unogona zvakare kugadzira nyowani software chirongwa.
• D. simba pane yekuratidzira module, unganidza uye dhawunirodha chirongwa chekugadzirisa, uye wotarisa iyo software inoshanda maitiro.
• E. Iyo software mhedzisiro haisviki pane inotarisirwa, ramba uchigadzirisa kodhi yepurogiramu, uye wozounganidza uye kurodha, kusvika mhedzisiro yasvika pane inotarisirwa.
  Kuti uwane rumwe ruzivo nezve matanho apfuura, ona zvinyorwa mu1 Demo dhairekitori.

Hardware Instructions

Overview yemodule's hardware resources inoratidzwa

• Module hardware zviwanikwa zvinoratidzwa mune zvinotevera manhamba maviri:

Zviwanikwa zvehardware zvinotsanangurwa sezvizvi:

LCD

• Iyo LCD inoratidzira saizi ndeye 2.8 inches, mutyairi IC ndeye ILI9341, uye sarudzo ndeye 24 0x 32 0. ESP32 yakabatana uchishandisa 4-waya SPI yekutaurirana interface.
• A. Nhanganyaya kune ILI9341 controller Iyo ILI9341 controller inotsigira resolution yepamusoro ye240 * 320 uye 172800-byte GRAM. Inotsigirawo 8-bit, 9-bit, 16-bit, uye 18-bit parallel port data mabhasi. Iyo zvakare inotsigira 3-waya uye 4-waya SPI serial ports. Sezvo parallel control inoda nhamba huru yeI / O ports, iyo inonyanya kuzivikanwa ndeye SPI serial port control. Iyo ILI9341 inotsigirawo 65K, 262K RGB kuratidzwa kwemavara, kuratidza ruvara kwakapfuma kwazvo, uku ichitsigira kutenderera kuratidzwa uye kupepeta kuratidza uye kutamba kwevhidhiyo, uye kuratidza nenzira dzakasiyana siyana.
• Iyo ILI9341 controller inoshandisa 16bit (RGB565) kudzora pixel kuratidza, saka inogona kuratidza anosvika 65K mavara papixel. Iyo pixel kero yekumisikidza inoitwa mukurongeka kwemitsara nemakoramu, uye iyo inowedzera uye inodzikira nzira inotarwa neiyo scanning mode. Iyo ILI9341 nzira yekuratidzira inoitwa nekuseta kero uyezve kuseta kukosha kwemavara.
• B. Nhanganyaya kuSPI communication protocol

Iyo yekunyora modhi yenguva ye4-waya SPI bhazi inoratidzwa mumufananidzo unotevera:

• CSX isarudzo yevaranda chip, uye chip inozogoneswa chete kana CSX iri padanho remagetsi rakaderera.
• D/CX ndiyo data/command control pini yechip. Kana DCX ichinyora mirairo pamazinga akaderera, data inonyorwa pamazinga akakwirira
• SCL ndiyo SPI bhazi wachi, ine imwe neimwe inosimuka mupendero ichiendesa 1 bit yedata.
• SDA ndiyo data inofambiswa neSPI, iyo inotumira 8 bits yedata kamwechete. Iyo data format inoratidzwa mumufananidzo unotevera:

• Yakakwira zvishoma kutanga, tumira kutanga.
• Pakutaurirana kweSPI, data ine nguva yekufambisa, ine musanganiswa weiyo chaiyo-nguva wachi chikamu (CPHA) uye wachi polarity (CPOL):
• Iyo nhanho yeCPOL inosarudza kusashanda mamiriro eiyo serial synchronous wachi, ine CPOL=0, ichiratidza yakaderera mwero. CPOL pair transmission protocol
• Hurukuro yacho yakanga isina simba guru.
• Kureba kweCPHA kunotarisa kana serial synchronous wachi inounganidza data pane yekutanga kana yechipiri wachi kusvetuka kumucheto,
• Kana CPHL=0, ita kuunganidza data padanho rekutanga shanduko;
• Kubatanidzwa kwezviviri izvi mafomu mana SPI nzira dzekutaurirana, uye SPI0 inowanzoshandiswa kuChina, uko CPHL=0 uye CPOL=0

ESP32 WROOM 32E M odule

• Iyi module ine yakavakirwa-mukati ESP32-DOWD-V3 chip, Xtensa dual-core 32-bit LX6 microprocessor, uye inotsigira wachi mareti kusvika ku240MHz. Iine 448KB ROM, 520KB SRAM, 16KB RTC SRAM, uye 4MB QSPI Flash. 2.4GHz WIFI,
• Bluetooth V4.2 uye Bluetooth Low Power modules inotsigirwa. Ekunze makumi maviri nematanhatu GPIOs, inotsigira SD kadhi, UART, SPI, SDIO, I26C, LED PWM, mota PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, TWAI uye mamwe maperipherals.

MicroSD Card Slot

• Uchishandisa SPI yekutaurirana modhi uye ESP32 yekubatanidza, tsigiro yeMicroSD makadhi eakasiyana siyana.

RGB Vatatu ruvara Chiedza

• Mwenje matsvuku, girini, uye bhuruu e LED anogona kushandiswa kuratidza mamiriro echirongwa.

Serial Port

• Iyo yekunze serial port module inoshandiswa kune serial port kutaurirana.

USB kune Serial Port uye One-tinya Dhawunirodha Circuit

• Iyo yakakosha mudziyo ndeye CH340C, imwe magumo yakabatana nekombuta USB, imwe magumo yakabatana neESP32 serial port, kuitira kuti uwane USB kune TTL serial port.
• Mukuwedzera, imwe-click download circuit inobatanidzwawo, saka kureva kuti, pakurodha purogiramu, inogona kupinda otomatiki modhi yekurodha, pasina chikonzero chekubata kunze.

Battery Interface

• Maviri-pini interface, imwe yeyakanaka electrode, imwe yeyakaipa electrode, kuwana bhatiri magetsi ekupa uye kuchaja.

Battery Charge uye Discharge Management Circuit

• Chishandiso chepakati iTP4054, dunhu iri rinogona kudzora bhatiri yekuchaja ikozvino, bhatiri rakachajwa zvakachengeteka kune saturation state, asi rinogona zvakare kudzora zvakachengeteka kubuda kwebhatiri.

BOOT Key

• Mushure mekunge module yekuratidzira yabatidzwa, kudzvanya kunodzikisa IO0. Kana iyo nguva iyo module yakabatidzwa kana iyo ESP32 ikagadziridzwa, kudzikisa IO0 kunopinza yekurodha modhi. Mamwe makesi anogona kushandiswa seakajairwa mabhatani.

Type-C Chinongedzo

• Iyo huru yekupa magetsi interface uye chirongwa chekurodha interface yemodhi yekuratidzira. Batanidza iyo USB kune serial port uye imwe-tinya kurodha wedunhu, inogona kushandiswa kugovera magetsi, kurodha uye serial kutaurirana.

5V kusvika 3.3V Voltage Regulator Circuit

• Iyo yakakosha mudziyo ndeye ME6217C33M5G LDO regulator.
• Iyo voltage regulator circuit inotsigira 2A V ~ 6.5V yakafara voltage input, 3.3V yakagadzikana voltage kubuda, uye iyo yakanyanya kubuda ikozvino 800mA, iyo inogona kusangana zvizere nevoltage uye zvazvino zvinodikanwa zvekuratidzira module.

RESET Kiyi

• Mushure mekunge modhiyo yekuratidzira yabatidzwa, kudzvanya kunodhonza ESP32 reset pini pasi (iyo yakasarudzika mamiriro inodhonza kumusoro), kuitira kuti uwane iyo reset basa.

Resistive Kubata Screen Kudzora Circuit

• Iyo yakakosha mudziyo ndeye XPT2046, iyo inotaurirana neESP32 kuburikidza neSPI.
• Iri redunhu ndiro bhiriji pakati peresitive touch screen uye ESP32 tenzi, ane basa rekufambisa iyo data pachiratidziro chekubata kune ESP32 tenzi, kuitira kuti uwane zvinorongeka zvepanobata.

Wedzera Pini

• Yekupinza IO port, GND, uye 3.3V pini isingashandiswe paESP32 module inotungamirwa kunze kwekushandiswa kweperipheral.

Backlight control circuit

• Iyo yakakosha mudziyo iBSS138 munda-effect chubhu.
• Imwe magumo edunhu iri yakabatana nepini yekudzora backlight pane ESP32 tenzi, uye imwe magumo yakabatana neakaipa danda reLCD screen backlight LED l.amp.
• Backlight control pini dhonza kumusoro, back light, zvikasadaro kure.

Mutauriri interface

• Wiring terminals dzinofanira kubatanidzwa vertically. Inoshandiswa kuwana mono speaker nema loudspeakers.

Audio simba ampLifier circuit

• Iyo yakakosha mudziyo ndeye FM8002E odhiyo amplifier IC.
• Imwe magumo edunhu iri yakabatana neESP32 odhiyo DAC kukosha kwepini yekubuda uye imwe magumo yakabatana kune iyo nyanga interface.
• Basa redunhu iri kutyaira nyanga yemagetsi diki kana speaker kuti inzwike. Kune magetsi e5V, iyo yakanyanya dhiraivha simba ndeye 1.5W (mutoro 8 ohms) kana 2W (mutoro 4 ohms).

SPI peripheral interface

• 4-waya horizontal interface. Tungamira kunze isina kushandiswa chip pini yekusarudza uye SPI interface pini inoshandiswa neiyo MicroSD kadhi, iyo inogona kushandiswa kune ekunze SPI zvishandiso kana zvakajairika IO ports.

Tsananguro yakadzama yeiyo schematic dhizaini yekuratidzira module

Type C interface yedunhu

Mudunhu iri, D1 ndiyo Schottky diode, iyo inoshandiswa kudzivirira ikozvino kubva kumashure. D2 kusvika kuD4 ndeye electrostatic surge dziviriro diode kudzivirira iyo yekuratidzira module kubva mukukuvadzwa nekuda kwekuwanda vol.tage kana dunhu pfupi. R1 ndiko kudhonza-pasi kuramba. USB1 ibhazi reType-C. Chiratidziro chemodule chinobatana neType C magetsi, kudhawunirodha zvirongwa, uye kutaurirana kuburikidza ne USB 1. Ipo +5V neGND zviri positive power voltage uye masiginecha epasi USB_D uye USB_D+ akasiyana masaini e USB, ayo anotumirwa kune onboard USB kune serial circuit.

5V kusvika 3.3V voltage regulator circuit

Mudunhu iri, C16 ~ C19 ndiyo bypass filter capacitor, iyo inoshandiswa kuchengetedza kugadzikana kweiyo inopinza vol.tage uye goho voltage. Iyo U1 ndeye 5V kusvika 3.3V LDO ine modhi nhamba ME6217C33M5G. Nekuti mazhinji emaseketi ari padhizaini module anoda 3.3V magetsi, uye simba rekuisa reType Cinterface rinonyanya 5V, saka vol.tage regulator shanduko yedunhu inodiwa.

Resistive touch screen control circuit

Mudunhu iri, C25 neC27 ndeye bypass filter capacitors, ayo anoshandiswa kuchengetedza vhoriyamu yekupinda.tage kugadzikana. R22 inodhonza-up resistor inoshandiswa kuchengetedza iyo default pini mamiriro akakwira. U4 ndiyo XPT2046 inodzora IC, Basa reiyi IC nderekuwana iyo coordination vol.tage kukosha kweiyo touch point yekupikisa kubata screen kuburikidza neX+, X -, Y+, uye Y mana mapini, uyezve kuburikidza neADC kutendeuka, kukosha kweADC kunoendeswa kune ESP32 tenzi. Iyo ESP32 tenzi inobva yashandura kukosha kweADC kune pixel coordinate kukosha kwechiratidziro. Pini yePEN ipini yekubata-bata, uye nhanho yekupinza yakadzikira kana chiitiko chekubata chikaitika.

USB kune serial port uye kamwe-tinya kurodha wedunhu

Mudunhu iri, U3 ndeye CH340C USB-kune-serial IC, iyo isingade yekunze crystal oscillator kufambisa dhizaini yedunhu. C6 is a bypass sefa capacitor inoshandiswa kuchengetedza vhoriyamu yekupindatage kugadzikana. Q1 neQ2 iNPN-mhando triodes, uye R6 neR7 ndiwo matatu base inodzikamisa zvinopikisa zvino. Basa redunhu iri nderekuziva kune USB-kune-serial port uye nekudzvanya kurodha basa. Iyo USB siginecha ndeyekupinza uye kubuda kuburikidza neUD + uye UD pini, uye inotumirwa kune ESP32 tenzi kuburikidza neRXD uye TXD mapini mushure mekutendeuka. Kamwe-tinya kurodha wedunhu musimboti:

• A. Iyo RST uye DTR mapini eCH340C inoburitsa yakakwira mwero nekusarudzika. Panguva ino, iyo Q1 uye Q2 triode haisati yabatidzwa, uye iyo IO0 mapini uye reset mapini eESP32 main control anodhonzwa kusvika padanho repamusoro.
• B. Iyo RST neDTR mapini eCH340C inobuda yakaderera mazinga, panguva ino, iyo Q1 neQ2 triode haisati yabatidzwa, uye maIO0 mapini nemapini ereset eESP32 main control achiri kudhonzwa kusvika kumusoro.
• C. Iyo RST pini yeCH340C inoramba isina kuchinjika, uye iyo DTR pini inoburitsa yakakwira mwero. Panguva ino, Q1 ichiri kutemwa, Q2 iripo, iyo IO0 pini yeESP32 tenzi ichiri kudhonzwa kumusoro, pini yekumisikidza inodhonzwa pasi, uye ESP32 inopinda munzvimbo yekumisikidza.
• D. CH340C's RST pini inoburitsa yakakwira mwero, DTR pini inoburitsa yakaderera, panguva ino Q1 iripo, Q2 yadzimwa, pini reset yeESP32 main control haizove yakakwira nekuti iyo yakabatana capacitor inochajirwa, ESP32 ichiri mu reset state, uye IO0 pini panguva iyi inodonhedzwa pasi, iyo nguva yekudhawunirodha ichadhonzwa pasi pakarepo.

Audio simba ampLifier circuit

Mudunhu iri, R23, C7, C8, uye C9 inoumba RC sefa yedunhu, uye R10 neR13 ndiyo inogadzirisa-inogadzirisa inopikisa yekushanda. amplifier. Kana kukosha kwekupikisa kweR13 kusingashanduki, kuduku kukosha kwekupikisa kweR10, iyo yakakura inzwi remutauri wekunze. C10 uye C11 ndiwo anopinza coupling capacitors. R11 ndiyo inodhonza-up resistor. JP1 ndiyo nyanga/mutauri chiteshi. Iyo U5 ndiyo FM8002E redhiyo simba amplifier IC. Mushure mekuisa neAUDIO_IN, iyo odhiyo yeDAC siginecha ndeye ampinokwenenzverwa neFM8002E kuwana uye kubuda kune mutauri/mutauri nemapini eVO1 neVO2. SHUTDOWN ndiyo pini yekugonesa yeFM8002E. Iyo yakaderera mwero inogoneswa. Nekutadza, chiyero chepamusoro chinogoneswa.

ESP32 WROOM 32E main control circuit

Mudunhu iri, C4 neC5 ibypass filter capacitors, uye U2 iESP32 WROOM 32E modules. Kuti uwane ruzivo rwemukati wedunhu remu module iyi, ndapota tarisa kune zviri pamutemo zvinyorwa.

Key reset circuit

Mudunhu iri, KEY1 ndiyo kiyi, R4 ndiyo inodhonza-up resistor, uye C3 ndiyo inononoka capacitor. Reset musimboti:

• A. Mushure mekuisa simba, C3 inobhadharisa. Panguva ino, C3 yakaenzana nepfupi pfupi, pini yeRESET inogadziriswa, uye ESP32 inopinda mumamiriro ekugadzirisa.
• B. Kana C3 ichichajwa, C3 yakaenzana nekuvhura dunhu, RESET pini inodhonzwa kumusoro, ESP32 reset yapera, uye ESP32 inopinda munzvimbo yakajairika yekushanda.
• C. Kana KEY1 ikadzvanywa, pini yeRESET yakadzikwa, ESP32 inopinda munzvimbo yekumisikidza, uye C3 inoburitswa kuburikidza neKEY1.
• D. Kana KEY1 yaburitswa, C3 inobhadhariswa. Panguva ino, C3 yakaenzana nepfupi pfupi, RESET pini yakadzikwa, ESP32 ichiri muRESET state. Mushure mekunge C3 yachajwa, pini yekumisikidza inodhonzwa kumusoro, ESP32 inogadzwa patsva uye inopinda munzvimbo yakajairika yekushanda.

Kana iyo RESET isingabudiriri, kukosha kwekushivirira kweC3 kunogona kukwidziridzwa zvakakodzera kuti kunonoke pini reset yakaderera nhanho nguva.

Interface circuit ye ​​serial module

• Mudunhu iri, P2 ndeye 4P 1.25mm pitch seat, R29 uye R30 impedance balance resistors, uye Q5 inzvimbo yemumunda inodzora iyo 5V yekupinza magetsi.
• R31 is a pulldown resistor. Batanidza RXD0 uye TXD0 kune serial pini, uye ipa simba kune mamwe mapini maviri. Chiteshi ichi chakabatana kune imwecheteyo serial port seyepaboard USB-to-serial port module.

EX pand IO uye peripheral interface maseketi

Mudunhu iri, P3 a uye P4 ndeye 4P 1.25mm pitch zvigaro. SPI_CLK, SPI_MISO, uye SPI_MOSI mapini akagovaniswa neiyo MicroSD kadhi SPI pini. Mapini SPI_CS, IO35 haashandiswe nemabhodhi emidziyo, saka anotungamirwa kuti abatanidze SPI, uye anogona zvakare kushandiswa kune yakajairika IO. Zvinhu zvekutarisira:

• A. IO35 inogona kungove mapini ekuisa.

Battery charge uye discharge management circuit

Mudunhu iri, C20, C21, C22, uye C23 zviri bypass filter capacitors. U6 ndiyo TP4054 bhatiri yekuchaja manejimendi IC. R27 inodzora bhatiri yekuchaja ikozvino. JP2 i2P 1.25mm pitch seat, yakabatana nebhatiri. Q3 iP-channel FET. R28 ndiyo Q3 grid yekudhonza-pasi resistor. TP4054 inochaja bhatiri kuburikidza nepini yeBAT; iyo idiki iyo R27 kuramba, iyo yakakura yekuchaja ikozvino, ine huwandu hwe500mA. Q3 neR28 pamwe chete zvinoumba bhatiri rekuburitsa dunhu, Kana pasina magetsi kuburikidza neType C interface, iyo +5V vol.tage is 0, ipapo gedhi reQ3 rinodhonzwa pasi kusvika padanho rakaderera, dhiraini uye sosi iripo, uye bhatiri rinopa simba kune yese module yekuratidzira. Kana yaiswa simba kuburikidza neiyo Type C interface, iyo +5V voltage is 5V, ipapo gedhi reQ3 rakakwirira 5V, dhiraini uye sosi zvakagurwa, uye bhatiri rinopihwa rinokanganiswa.

1 8P LCD panel wire welding interface

Mudunhu iri, C24 ndiyo bypass filter capacitor, uye QD1 ndiyo 48P 0.8mm pitch liquid crystal screen welding interface. Iyo QD1 ine pini yekupikisa yekubata sikirini, LCD skrini voltage pin, SPI yekukurukurirana pini, pini yekudzora uye backlight redunhu pini. Iyo ESP32 inoshandisa mapini aya kudzora LCD uye yekubata sikirini.

Dhawunirodha kiyi yedunhu

• Mudunhu iri, KEY2 ndiyo kiyi uye R5 ndiyo inodhonza kumusoro. IO0 yakakwira nekusarudzika uye yakaderera kana KEY2 yakatsikirirwa. Dzvanya uye ubate KEY2, simba kana kusetazve, uye ESP32 ichapinda yekurodha modhi. Mune zvimwe zviitiko, KEY2 inogona kushandiswa sekiyi yakajairika.

Battery simba rekuona dunhu

Mudunhu iri, R2 neR3 dzine chikamu voltage resistors, uye C1 neC2 zviri bypass filter capacitors. Bhatiri voltageBAT + yekuisa chiratidzo inopfuura nemudivider resistor. BAT_ADC ndiro voltage kukosha kumagumo ese eR3, iyo inotumirwa kune ESP32 tenzi kuburikidza nepini yekupinza uye yozoshandurwa neADC kuti pakupedzisira uwane bhatiri vol.tage value. The voltage divider inoshandiswa nekuti ESP32 ADC inoshandura yakakwira 3.3V, ukuwo bhatiri saturation vol.tage i4.2V, iyo iri kunze kwepakati. The akawana voltage yakapetwa ne2 ndiro chairo bhatiri voltage.

LCD backlight control circuit

• Mudunhu iri, R24 ndiyo inopikisa debugging uye inochengetwa kwenguva pfupi. Q4 ndiyo N-channel field effect chubhu, R25 ndiyo Q4 grid kudhonza-pasi resistor, uye R26 ndiyo backlight ikozvino inomisa resistor. Iyo LCD backlight LED lamp iri mumamiriro akafanana, danda rakanaka rakabatana ne 3.3V, uye danda risina kunaka rinobatanidzwa nekudonha kweQ4. Kana pini yekudzora LCD_BL inoburitsa yakakwira voltage, iyo yekudonha uye sosi matanda eQ4 anobatidzwa. Panguva ino, danda rakashata reLCD backlight rakadzikwa, uye backlight LED lamp inobatidzwa uye inoburitsa mwenje.
• Kana pini yekudzora LCD_BL inoburitsa yakaderera voltage, iyo yekudonha uye sosi yeQ4 yakagurwa, uye iyo isina kunaka backlight yeLCD skrini inomiswa, uye backlight LED l.amp haina kubatidzwa. By default, LCD backlight yakadzimwa.
• Kuderedza iyo R26 kuramba kunogona kuwedzera kupenya kwakanyanya kweiyo backlight.
• Pamusoro pezvo, pini yeLCD_BL inogona kuisa chiratidzo chePWM kugadzirisa LCD backlight.

RGB matatu-mavara mwenje kudzora dunhu

• Mudunhu iri, LED2 iRGB matatu-ruvara lamp, uye R14~R16 ine mavara matatu lamp ikozvino kumisa resistor.
• LED2 ine dzvuku, girini, uye bhuruu LED mwenje, ayo akajairika anode kubatana.
• IO16, IO17 uye IO22 mapini matatu ekudzora, anovhenekera mwenje we LED padanho rakaderera uye anodzima mwenje we LED padanho repamusoro.

MicroSD kadhi slot interface wedunhu

• Mudunhu rino, SD_CARD1 ndiyo MicroSD kadhi slot. R17 kusvika kuR21 ndiwo anodhonza-up resistors papini yega yega. C26 ndiyo bypass filter capacitor. Iyi interface yedunhu inotora SPI yekutaurirana modhi. Inotsigira yakakwirira-kumhanya kuchengetedza kweMicroSD makadhi.
• Ziva kuti iyi interface inogovera bhazi reSPI neSPI peripheral interface.

Chengetedzo yekushandisa kuratidza module

1. Iyo module yekuratidzira inobhadharwa nebhatiri, mutauri wekunze anoridza odhiyo, uye skrini yekuratidzira iri kushandawo; panguva ino, iyo yakazara ikozvino inogona kudarika 500mA. Muchiitiko ichi, iwe unofanirwa kutarisisa kune iyo yakanyanya ikozvino inotsigirwa neType C tambo uye iyo yakanyanya ikozvino inotsigirwa nemagetsi ekugadzirisa magetsi kudzivirira kusakwana kwemagetsi.
2. Panguva yekushandiswa, usabata iyo LDO voltage regulator uye bhatiri kuchaja manejimendi IC nemaoko ako kudzivirira kupiswa nekupisa kwakanyanya.
3. Kana uchibatanidza iyo IO port, teerera kune iyo IO kushandiswa kudzivirira kukanganisa uye iyo purogiramu kodhi tsanangudzo haienderane.
4. Shandisa chigadzirwa zvakachengeteka uye zvine musoro.

FAQ

• Mubvunzo: Ndinowana sei sampuye mapurogiramu nemaraibhurari esoftware?
  • A: Iyo sample mapurogiramu nemaraibhurari anogona kuwanikwa mune 1-_Demo dhairekitori yetsanangudzo yezviwanikwa.
• Mubvunzo: Ndeapi maturusi anosanganisirwa mune chishandiso software?
  • A: Iyo software yekushandisa inosanganisira WIFI uye Bluetooth test APP, debugging zvishandiso, USB kune serial port mutyairi, ESP32 Flash download tool software, character take-up software, image take-up software, JPG image processing software, uye serial port debugging tools.

Zvinyorwa / Zvishandiso

LCD wiki E32R28T 2.8inch ESP32-32E Ratidza Module [pdf] User Manual E32R28T, E32N28T, E32R28T 2.8inch ESP32-32E Ratidza Module, E32R28T, 2.8inch ESP32-32E Ratidza Module, ESP32-32E Ratidza Module, Ratidza Module, Module

References

• User Manual